diff options
Diffstat (limited to 'drivers/staging/lustre/include/linux/libcfs/lucache.h')
| -rw-r--r-- | drivers/staging/lustre/include/linux/libcfs/lucache.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/drivers/staging/lustre/include/linux/libcfs/lucache.h b/drivers/staging/lustre/include/linux/libcfs/lucache.h deleted file mode 100644 index 5d6e1b9de206..000000000000 --- a/drivers/staging/lustre/include/linux/libcfs/lucache.h +++ /dev/null @@ -1,162 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf - * - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, - * CA 95054 USA or visit www.sun.com if you need additional information or - * have any questions. - * - * GPL HEADER END - */ -/* - * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2012, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - */ - -#ifndef _LUCACHE_H -#define _LUCACHE_H - -#include "libcfs.h" - -/** \defgroup ucache ucache - * - * @{ - */ - -#define UC_CACHE_NEW 0x01 -#define UC_CACHE_ACQUIRING 0x02 -#define UC_CACHE_INVALID 0x04 -#define UC_CACHE_EXPIRED 0x08 - -#define UC_CACHE_IS_NEW(i) ((i)->ue_flags & UC_CACHE_NEW) -#define UC_CACHE_IS_INVALID(i) ((i)->ue_flags & UC_CACHE_INVALID) -#define UC_CACHE_IS_ACQUIRING(i) ((i)->ue_flags & UC_CACHE_ACQUIRING) -#define UC_CACHE_IS_EXPIRED(i) ((i)->ue_flags & UC_CACHE_EXPIRED) -#define UC_CACHE_IS_VALID(i) ((i)->ue_flags == 0) - -#define UC_CACHE_SET_NEW(i) (i)->ue_flags |= UC_CACHE_NEW -#define UC_CACHE_SET_INVALID(i) (i)->ue_flags |= UC_CACHE_INVALID -#define UC_CACHE_SET_ACQUIRING(i) (i)->ue_flags |= UC_CACHE_ACQUIRING -#define UC_CACHE_SET_EXPIRED(i) (i)->ue_flags |= UC_CACHE_EXPIRED -#define UC_CACHE_SET_VALID(i) (i)->ue_flags = 0 - -#define UC_CACHE_CLEAR_NEW(i) (i)->ue_flags &= ~UC_CACHE_NEW -#define UC_CACHE_CLEAR_ACQUIRING(i) (i)->ue_flags &= ~UC_CACHE_ACQUIRING -#define UC_CACHE_CLEAR_INVALID(i) (i)->ue_flags &= ~UC_CACHE_INVALID -#define UC_CACHE_CLEAR_EXPIRED(i) (i)->ue_flags &= ~UC_CACHE_EXPIRED - -struct upcall_cache_entry; - -struct md_perm { - lnet_nid_t mp_nid; - __u32 mp_perm; -}; - -struct md_identity { - struct upcall_cache_entry *mi_uc_entry; - uid_t mi_uid; - gid_t mi_gid; - struct group_info *mi_ginfo; - int mi_nperms; - struct md_perm *mi_perms; -}; - -struct upcall_cache_entry { - struct list_head ue_hash; - __u64 ue_key; - atomic_t ue_refcount; - int ue_flags; - wait_queue_head_t ue_waitq; - unsigned long ue_acquire_expire; - unsigned long ue_expire; - union { - struct md_identity identity; - } u; -}; - -#define UC_CACHE_HASH_SIZE (128) -#define UC_CACHE_HASH_INDEX(id) ((id) & (UC_CACHE_HASH_SIZE - 1)) -#define UC_CACHE_UPCALL_MAXPATH (1024UL) - -struct upcall_cache; - -struct upcall_cache_ops { - void (*init_entry)(struct upcall_cache_entry *, void *args); - void (*free_entry)(struct upcall_cache *, - struct upcall_cache_entry *); - int (*upcall_compare)(struct upcall_cache *, - struct upcall_cache_entry *, - __u64 key, void *args); - int (*downcall_compare)(struct upcall_cache *, - struct upcall_cache_entry *, - __u64 key, void *args); - int (*do_upcall)(struct upcall_cache *, - struct upcall_cache_entry *); - int (*parse_downcall)(struct upcall_cache *, - struct upcall_cache_entry *, void *); -}; - -struct upcall_cache { - struct list_head uc_hashtable[UC_CACHE_HASH_SIZE]; - spinlock_t uc_lock; - rwlock_t uc_upcall_rwlock; - - char uc_name[40]; /* for upcall */ - char uc_upcall[UC_CACHE_UPCALL_MAXPATH]; - int uc_acquire_expire; /* seconds */ - int uc_entry_expire; /* seconds */ - struct upcall_cache_ops *uc_ops; -}; - -struct upcall_cache_entry *upcall_cache_get_entry(struct upcall_cache *cache, - __u64 key, void *args); -void upcall_cache_put_entry(struct upcall_cache *cache, - struct upcall_cache_entry *entry); -int upcall_cache_downcall(struct upcall_cache *cache, __u32 err, __u64 key, - void *args); -void upcall_cache_flush_idle(struct upcall_cache *cache); -void upcall_cache_flush_all(struct upcall_cache *cache); -void upcall_cache_flush_one(struct upcall_cache *cache, __u64 key, void *args); -struct upcall_cache *upcall_cache_init(const char *name, const char *upcall, - struct upcall_cache_ops *ops); -void upcall_cache_cleanup(struct upcall_cache *cache); - -#if 0 -struct upcall_cache_entry *upcall_cache_get_entry(struct upcall_cache *hash, - __u64 key, __u32 primary, - __u32 ngroups, __u32 *groups); -void upcall_cache_put_entry(struct upcall_cache *hash, - struct upcall_cache_entry *entry); -int upcall_cache_downcall(struct upcall_cache *hash, __u32 err, __u64 key, - __u32 primary, __u32 ngroups, __u32 *groups); -void upcall_cache_flush_idle(struct upcall_cache *cache); -void upcall_cache_flush_all(struct upcall_cache *cache); -struct upcall_cache *upcall_cache_init(const char *name); -void upcall_cache_cleanup(struct upcall_cache *hash); - -#endif - -/** @} ucache */ - -#endif /* _LUCACHE_H */ |